The easiest way to beat the water-type gym leader is by using a strong grass or electric type Pokemon. If you use grass though, watch out for ice-type moves because it will make the battle much harder. Some Pokemon that would be useful are Breloom, Sceptile, and Vileplume for grass-types and Raichu, Magneton, and Manectric for electric-types. Also be sure to bring ice heals and hyper potions.
Go to Mawille(eletric gym town) and there will be a gym leader... there is no gym leader
the 6th gym leader is in fortree city after the weather station where you get castform
keep using phychic
You beat Roxanne the first gym leader in Rustbordo City
First beat the Mauville Gym leader, Wattson.
Water, dark and grass Pokemon
use fire or water easy or cacht rayquaza
Simple use a water, ground or rock type Pokemon at the fourth gym
Go to Mawille(eletric gym town) and there will be a gym leader... there is no gym leader
Beat 4 Gym leaders then beat the gym leader in petalburg city.
Beat the 8th Gym leader.
get better pokemon
Beat the gym leader
you beat this gym leader hope I helped
with fighting type pokemon
The only way to get a gym badge is to challenge the corresponding gym leader and win.
the 6th gym leader is in fortree city after the weather station where you get castform